Rendering apparatus.



No. 662,403. Patented Nov. 27, |900. E. R. EDSON.

RENDERING APPARATUS. (Appliw'tion med Nov. 9, 1899. (No Model.)

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Patented Nov. 27, |900.

E. R. Ensim. nENnEmneA'PPARATus.

(Application led Nov. Q, 1899.,

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lUNtiEn States PATENT @einen EUGENE n. Ens'oN, on CLEVELAND, or-no,AssieNon 'ro THE BUCKEYE Erst-I COMPANY, oF SAME PLACE.

RENDERING APPARATUS.

SPECIFICATION forming` part of Letters Patent No. 662,403, datedNovember 27, 1900.

Application filed November 9, l S9 9.

To r/ZZ whom it may concern:

Be it known that I, EUGENE R. EDsoN, a resident of Cleveland, county ofCuyahoga, and State of Ohio, have invented certain new and usefulImprovements in `Apparatus for Extracting Gelatin-Forming Substances andOil from Fish and other Material; and I do hereby declare the followingto be a full,clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and usethe same.

This invention relates to improvements in apparatus for treating fish orparts of fish and other materials to produce oil and gelatin.

The primary7 object of this invention is to produce an apparatus wherebysh or parts of fish can be economically treated, whereby the oilextracted from the material undergoing treatment is not, in connectionwith other matter of the mass of material, converted into an emulsion orotherwise injured, and whereby the congealableness of the gelatinsolution formed by treating the material with a suitable solvent is notdestroyed.

Vith this object in view and to the end of realizing otheradvantages-such, for instance, as the purification of the fish-oil--theiuven tion consists in certain features of construction and combinationsof parts hereinafterdescribed, and pointed out in the claims.

In the accompanying drawings, Figure I is a side elevation, mostly incentral vertical section, of apparatus embodying the inventionthatconstitutes the su bject-matter of this application. Fig. II is atop plan of the same. Fig. Ill is an enlarged side elevation of thestrainer and lfilter with which the receiving end of the siphon-forininghose or tube employed in draining the gelatin solution from the materialundergoing treatment is employed. Fig. IV is a bottom plan, partly insection, of the head formed upon the lower end of the pipe employed inconducting air into the lower portion of the mass of material undergoingtreatment.

Referring to the drawings, a designates au upright tank or receptacleinto which the fish or parts of fish or other material that are to betreated are introduced. The tank or receptacle ct has its lower portionZ) gradually reduced diametrically in a downward direcjerial No.'736,401- tNo model.)

tion to facilitate the escape of the guano-forming residue that is leftin the said receptacle after the oils and glues or gelatin have beenextracted from the material within the receptacle at the discharge-pipeor `outlet d with which the chamber c of the receptacle Ct at the lowerend of the inverted-cone-shaped lowerportion of the receptaclecommunicates. The outlet d constitutes, therefore, the receptaclesoutlet for the guano-forming residue and is provided with a valve c ofany improved construction for interrupting and establishingcommunication from the chamber c through the pipe or outlet d.

The upper portion of the tank or receptacle a is gradually reduceddiametrically toward the receptacles upper extremity. The receptacle ais open at .the upper end of its upper conical portion f, that isprovided with the lateral aperture g, with which the feedspout hcommunicates. The feed-spout h is in open relation, therefore, with thechamber c of the receptacle a, preferably at the upper end of the upperconical portion f of the receptacle.

The tank or receptacle ct is provided centrally with avertically-arranged or upright core t', that extends, preferably, from ashort dist-ance above the uppen conical portion of the said receptacleinto the lower invertedcone-shaped portion l) of the receptacle. Thecore z' is closed at its lower end and has its lower end portiongradually reduced diametrically in a downward direction or invertedconeshaped, as atj, so as to avoid obstructing the passage of theguano-forming residue to the outlet CZ of the receptacle. The core i issupported from the shell of the receptacle a in any approved manner, andpreferably the core is supported from the upper conical portion and thelower inverted-cone-shaped portion of the receptacle. In the apparatusillustrated braces 7n have, respectively, one end thereof secured to thecore and the other end attached to the shell of the conical portion f ofthe receptacle a. `Similarly braces Z have, respectively, one endthereof secured to the lower portion of the core 't' and the other endattached to the lower invertedcone-shaped -portion b of the receptaclect. The core t' is hollow, and a pipe or pipe-line IOO m for conductingair under pressure into the lower portion of the chamber c of therecep-v lower end below and, preferably, near the lower extremity of thecore with a head n, that has a plurality of, and preferably several,laterally-projecting arms o. Each of the arms o is provided internallywith a checkvalve p, as shown in Fig. IV, and with a seat q for theinner end of the valve and with a stop-forming flange or lug r forlimiting the outward movement of the valve. Each valve 1o is free tomove, therefore, in the direction required to establish open relationbetween the pipe m and the chamber c of the receptacle et by anypressure within the said pipe fm, but is closed and retained closed bythe pressure within the chamber c when there is no pressure in the pipem or when the pressure in the pipe m becomes less than the back pressurewithin the chamber c. Each arm o is provided at its outerA end with ascreen v for preventing ingress of solid material from the chamber cinto the said arm. The pipe 'nt extends outside of the receptacle a asuitable distance and is in open relation at its outer end with thechamber of a tank s, wherein air under pressure is stored and suppliedby asuitably-operated' pump t, that has its outlet connected with thetank sin any approved manner and has its inlet'communicating wit-h theexternal atmosphere. The pipe m at any suitable point between the tank sand the core i is provided with a valve u for regulating the supply ofair under pressure to the chamber c.

The outlet d of the receptacle ct is provided with a valved drain-pipe wfor draining from the said receptacle any glue solution accumulating inthe outlet and in the lower portion of the receptacle c above the valvee of the outlet, and the passage-way from the chamber c through the pipewis controlled by the valve an, with which the said pipe is provided.The pipe w at its receiving end is provided with a screen 40 forpreventing the ingress of solid matte-r from the chamber c into the saidpipe. The pipe w is provided also, preferably beyond the outer end ofthe casing containing the valve with a tilter 41, whereby the liquidthat is conducted from the chamber c through the said pipe is purified.The receptacle a is provided also with an outlet for the solution thatcontains the substance required to form isinglass or a higher grade ofgelatin extracted from the material treated within the receptacle, andthe said outlet comprises, preferably, a siphon consisting of a somewhatstiff flexible hose or tube y, that extends through a guideformingtubular sheath or case e', formed internally of and upon the upperconical portionf of the receptacle d. The hose or tube y is manipulatedin any approved manner, and the sheathor case e', that extends, pret'-`erably, from the upper end of the upper` vceptacle a.

conical portionfof the receptacle to the lower' end of the said portionof the receptacle, is instrumental in guiding the hose or tube into theouter portion of the said chamber. The Siphon-forming hose or tube y hasits receiv-v ing end provided, preferably, with a screen or strainer 46for preventing the ingress of solid matter from the chamber c into thesaid tube, and the latter at the inner side vof the screen 46 isprovided wit-h a filter 47. The screen or strainer is preferably conicalor tapering to facilitate the passage of the same into and throughmaterial being treated within the receptacle ct.

The provision of the core t centrally of the receptacle a renders theform of the chamber c annular around the said core. rlhe annular form ofchamber c is important to prevent solidifying or caking of the masswithin the receptacle. If the core were omitted, the material undergoingtreatment within the receptacle a would have a tendency to gatherl andcake into a solid mass within the central portion of the receptacle. Thepresence of the core prevents such a caking or gathering of thematerial.

A valved water-supply pipe 8 is arranged to discharge into the upper endof the receptacle a.

The tank or receptacle a is arranged centrally of a vertically-arrangedor upright tank 10, that is larger diametrically than the receptacle a,so as to form an annular chamber 11, surrounding the said receptacle a.rlhe tank '10 extends from the lower extremity of the lowerinverted-cone-shaped portion b of the receptacle et upwardly to near theupper end of the upper conical portion fof the re- The tank 10 issupported in any approved manner; but the receptacle a is supported,preferably, from and internally of the tank 10, preferably by braces 12,attached, respectively, at one end to the receptacle CL and having theother end secured to the tank 10. A water-supply pipe 13 extends anddischarges int-o the chamber 11 of the tank lO below a trough 23, formedinternally of the upper portion of the said tank., The pipe 13 has avalve 1.4 for controlling the supply of water to the chamber 11. Asteam-supply pipe 15 extends into the lower end of the chamber l1 andthere terminates in a coil 16, employed in healing thewater supplied tothe said chamber. The pipe 15 is provided with a valve 17 forcontrolling the supply of steam to the coil 16, and the coil 16 isprovided, preferably, with a valved drain-pipe 18. The bottom 19 ot' thechamber 1l declines toward the lower extremity of theinvertedcone-shaped lower portion of the receptacle a, and the chamber11, at the lower portion of the bottom 19, is in open relation with thevalved drain-pipe 21.

As already indicated, a trough 23 is formed internally of and upon theupper portion of the tank 10 a suitable dist-ance above the water-supplypipe 13. The trough 23 is ar- IOO IIO

ranged only above the 'outerrportion of the water-receiving chamber 11of the tank 10, and consequently the said chamber extends upwardlybetween the trough and the upper conical portion of the tank orreceptacle ct. The bottom 24 of the trough declines toward the troughsoutlet that is formed by a short pipe 25, that has its inner endcommunicating with thedeepestportion of the trough. Pipe has its outerend connected by an elbow 26 with two valved pipes 27 and 29.

The operation of the apparatus is as follows: The rfish or parts of shor other material that are to be treated within the apparatus areintroduced at the spout h into the tank or receptacle d after theoperator has closed the valve e of the receptacles outlet d and thevalve as ot' the drain-pipe w. The valve u of the air-supply pipe m isnormally closed, and the Siphon-forming hose or tube 'y may be removedfrom the tank or receptacle ct at the commencement of the operation ofthe apparatus. The valve 9 of the water-supply pipe 8 is normallyclosed. When the receptacle ct has been supplied with a suitable amountof material to be treated, the valve 9 is opened, whereupon water willrun from the pipe 8 upon the material within the receptacle a, and suchrelative quantities of water and Iish or other material requiringtreatment are introduced into `the receptacle as will prevent caking ofthe solid material within the receptacle a in a vertical direction andwill cause the said receptacle to be filled too near the latters upperextremity. Preferably hot water is supplied through the pipe S. Thelevel of the contents within the receptacle is indicated by the dottedline 31, Fig. 1, within the upper portion of the said receptacle. rlhewater discharged into the receptacle ct from the pipe S constitutes asolvent suitable for the treatment of the material within thereceptacle. Having supplied the receptacle a with the material to betreated and the solvent-constituting water, the outer tank 10 has itsannular chamber 11 supplied with water from the pipe 13 upon opening thevalve l-t of the said pipe. The water introduced into the chamber 11 bythe pipe 13 is preferably heated in any approved manner bel'ore itenters the said pipe. p The `desired level of water maintained withinthe chamber 11 is indicated by the dotted line 32, Fig. 1, within theupper end of the said chamber. The chamber 11 having been supplied withwater from the Vpipe 13, the valve 17 of the steam-supply pipe 15 isopened, so as to supply steam to the heating-coil 16, and the hot. watersupplied to the chamber 11 by the pipe 13 is quickly heated to a boilingtemperature by the action of the heating-00H16. The diameter ot' thereceptacle a is preferably about two-thirds of the diameter of the tank10. ln any event the diameter or transverse area of the receptacle aissuch relative to the diameter or transverse area of the cham ber 11 andthe boilingwater within the chamber 11 is maintained at such atemperature that the mass of material within the chamber o of thereceptacle a shall be heated to and maintained at a high temperaturebelow the boilingpoint-such, for instance, as a temperature ot1 200o or210 Fahrenheit. A temperature as high or above the boiling-point shouldbe avoided in the treatment of the mass of inaterial within thereceptacle a, because the treatment of the said material with atemperature as high as or above the boiling-point would result in theconversion of the oil that is to be extracted from the material into anemulsion and would discolor or otherwise injure the 'oil and destroy thecongealableness of the substance to be dissolved in the water to producegelatin upon the subjection ot' the solution to a suitably lowtemperature after its removal from the receptacle ct. During thetreatment of the material within the receptacle ct with a solvent at ahigh temperature below the boiling-point the scum-forming impuritiesthat constitute the lightest portion of the mass rise first and appearand accumulate on top of the mass within the upper end of the receptacleand overflow from the receptacles upper extremity down the externalsurface of the upper conical portion fof the said receptacle onto theboiling water in the tank 10. Any matter escaping with the said scumfrom the receptacle ot and heavier than the water within the chamber 11of the tank l0 descends to the bottom of the said chamber, and thatportion of the scum that is lighter than the boiling water is eithervaporized or caused to overow from the top of the boiling water into thetrough 23, whence it passes into pipe 25 and thence is conducted off bypipe 27, and, of course, preparatory to the reception ot' the scum bythe trough the valve 2S of the pipe 27 is opened, if not already opened,and the valve 30 of the pipe 29 is closed, it not already closed. Thewater-level maintained within the chamber 1l of the tank 10 should besuch relative to the trough 23 that such portions ot' the sentii as havenot been precipitated within the boiling` water nor evaporated upon theboiling water shall be at once conducted to or caused to overtiow intothe trough 23. The oil extracted from the material within the receptacled, is the next lightest portion of the mass of materialundergoingtreatment, and consequently rises into the upper end of thereceptacle and causes any scum that has not yet overflown from thereceptacle to overflow therefrom. As soon as the scum is removed fromthe receptacle (t and conducted ott by pipe 27 the valve 28 of the saidpipe is closed andthe valve 30 ofthe pipe 29 opened. Oil extracted fromthe material within the receptacle Ct continues to rise and ultimatelyoVertlow from the upper open end ot` the said receptacle and adown theexternal surface of the upper conical portion fot' the receptacle ontothe boiling water within the chamber l1 of the tank 10. The steam risingfrom the boiling water IOO IIO

through the oil Iioating upon the water vaporizes the impurities in theoil. Any foreign matter passing with the oil to the boiling water andheavier than the oil and water descends to the b'ottom of thev chamber11. The lighter impurities contained in the oil are vaporized, asalready indicated, and purified oil overdows from the boiling Water intothe trough 23. The desired level of boiling water Wilhin the chamber 11can be readily maintained by such a regulation of the valve 14 of thepipe 13 as will iirst establish a suitable level and thereupon maintainthe said level during the boiling of the Water by establishing acontinuous iiow of water from the pipe 13 into the chamber ll equal tothe quantity of water continually passing olf in the form of steamduring the operation of the water. Thev oil is floated on top of theboiling water for about two hours and caused to overflow by causing morewater to flow into the chamber 1l from the pipe 13. As soon as theextracted oil that has readily risen has overflowed from the receptaclea Without requiring any assistance from au external agency or as soon asthe flow of oil from the material undergoing treatment Within thereceptacle@ becomes slow and rises with difflculty on account of thegradual decrease in the quantity of the oil remaining with the materialair under pressure is introduced through the pipe m into the lowerportion of the chamber of the receptacle ct in a lateral direction belowthe core t' upon opening the valve u of the said pipe, and obviously theprovision of the said pipe with the head/rt and the latters valved armso causes the air to be discharged laterally in different directions intothe lower end of the chamber, and the air discharged from the said headrises into and disintegrates the material and forces the remaining oilor facilitates the dow of oil to the top of the mass within thereceptacle a.

The substance extracted from sh material and dissclving in thesolvent-constituting water is suitable for the production of variousgrades of gelatin and may properly be denominated a gelatin solution.Some parts of ish contain a gelatin-producible substance of variousgrades-such, for instance, as matter suitable for the production ofisinglass or substantially pure gelatin and other matter convertibleinto the lower grades of'gelatinsuch, for instance, as glues. Fishmaterial of this character may be subjected to two or more treatmentswithin the receptacle a and several runs of gelatin solution from thereceptacle taken. Suppose the first run of liquid were'suitable forproducing a high grade of gelatin-such, for instance, as isinglass. Thisrun would be effected through the hose or tube y. If the second run ofliquid from the receptacle were suitable for producing` a high grade ofglue, the same may be drained from the receptacle u, through the hose ortube y, but kept separate from any purer liquid previously. drawn fromthe receptacle, or

drained throughthe pipe w. Athird or fourth run of liquid from'thereceptacle a will generally yield a lower grade of glue-producingproduct and is eii'ect-ed through the pipe w. In other words, the tube yis the receptacles outlet for the liquid from which high grades ofgelatin are obtained, while the pipe w constitutes the receptaclesoutlet for the liquid from which lower grades of gelatin are producible.Thesiphon-forming tube y is introduced first into the upper portion ofthe mass within the receptacle a and is gradually fed downwardly in thereceptacle t as the level of the gelatin solution descends within themass during a run of solution from the receptacle a. The gelatinsolution largely forms or appears Within the'outer portion of thechamber c, andhence the tube y by means of the open-ended case a isintroduced and guided into the said portion ofthe chamber. As alreadyindicated,l the liquid that is conducted fromthe receptacle through thetube y is-strained bythe strainer or screen at the receiving end ofthe`said tube and cleaned by the iilter within the said tube, and theliquid that is drained from the receptacle a through the pipe w isstrained by the screen or 'strainer at the receiving end of the saidpipe and filtered by the iilter within the pipe.

The operation of the apparatus may be continued by so regulating thevalve 9 of the water-supply pipe 8 or opening the said valve at suitableintervals oftime as to maintain such a level of the mass ofl materialwithin the receptacle d or to reestablish the desired level as willaccommodate a continuation of the flow ofA oil vfrom the upper end ofthe receptacle a until all or substantially all of the oil has beenextracted from the fish material and until all or substantially all ofthe substance useful in the production of gelatin has been separatedfrom the solid material. The residue remaining in the chamber c of thereceptacle ct after the separation of the desired oil and thegelatin-forming substance from the mass within the said chamber is drawnoff through the outlet d upon opening the valve c and forms guano orfertilizer.

Any solid matter that has accumulated upon the bottom 19 of the chamber11 of the tank l0 is removable from the said chamber through the pipe 2lupon opening the valve 22 of the said pipe.

It will be observed that by the apparatus hereinbefore .described nomaterial is wasted, and the various substances or matter, solid andliquid, that compose the fish or parts of sh or other material operatedupon are economically separated and saved to the best advantage.

What I claim is- 1. Apparatus of the character indicated, comprising areceptacle for receiving thematerial to be treated; meansfor heating thematerial supplied to the receptacle; means for supplying the receptaclewith a solvent; a valved residue-outlet leading from the lower IOO IIO

end of the receptacles chamber; a valved pipe in open relation with thelower end of the said chamber above the valve in the aforesaid outlet,and a filter arranged in the line of the said pipe, substantially as andfor the purpose set forth.

2. Apparatus of the character indicated, comprising a receptacle forreceiving the material to be treated and the solvent employed in thetreatment of the material; means for heating the material placed withinthe receptacle; a valved residue-outlet leading from the lower end ofthe said chamber; a valved pipe in open relation with the chamber at apoint between the residue-outlet and the said chamber; a strainer at thereceiving end of the pipe, anda filter arranged within the pipe outsideof the valved portion of the pipe, su bstantially as and for the purposeset forth.

3. In apparatus of the character indicated, the combination, with thereceptacle, wherein the material is to be treated, provided with a coreIl arranged within and centrally of the said receptacle, of aSiphon-forming tube extending into the said receptacle, and means forguiding the said tube into the outer portion of the chamber of thereceptacle between the aforesaid core and the surrounding wall of thesaid chamber, substantially as and for the purpose set forth.

4t. In apparatus of the character indicated,

the combination, with the receptacle in which l the material is to betreated, which receptacle has an upper conical portion f and is providedwith a core t arranged within and centrally of the said receptacle, of aSiphon-forming tube adapted to extend into the said receptacle, andmeans, internally of the receptacle, for guiding the said tube into theouter portion of the chamber of the receptacle between the aforesaidcore and the surrounding wall of the said chamber, substantially as andfor the purpose set forth.

5. In apparatus of the character indicated, the combination, with areceptacle in which the material is to be treated, which receptacle hasan upper conical portion, of the siphon-forming tube adapted to extendinto the said receptacle, and the guide-forming openended sheath orcasing a formed internally of and upon the aforesaid conical portion ofthe receptacle, substantially as and for the purpose set forth.

6. Apparatus of the character indicated, comprising a tank l0, a valvedwater-supply 'pipe arranged to discharge into the tank,

means for supplying the heat necessary to boil the water within thetank, a receptacle arranged within and centrally of the tank and havingits upper end provided with a material-inlet, a valved liquid-supplypipe arranged to discharge into the material-receiving chamber of thesaid inner receptacle, and means for draining the said chamber ofsolution that is formed within the chamber, submeans for draining thesaid chamber of solution that is formed within the chamber,substantially as and for the purpose setforth.

S. Apparatus of the character indicated, comprising a tank l0; a valvedwater-supply pipe 13 arranged to discharge into the tank; a receptaclearranged within and centrally of the tank and having aninvertedconesl1aped lower portion and a centrally-located core i; avalved residue -outlet d leading from the lower end of theinverted-cone-shaped lower portion of the said receptacle centrally ofthe bottom of the tank; a valved steam-coil 16 within the tank aroundthe inner receptacle; a valved drain-pipe w leading from and in openrelation with the lower end of the chamber of the aforesaid receptacle,and a valved water-supply pipe arranged to discharge into the upperportion of the said receptacle, substantially as and for the purpose setforth.

9. Apparatus of the character indicated, comprisinga tank,a valvedwater-supply pipe arranged to discharge into the tank, a receptaclearranged within and centrally of the tank and having a centrally-locatedcore, a valved residue-outlet leading from the lower end of theaforesaid inner receptacle centrally of the bottom of the tank, meansfor supplying the heat necessary to boil a body of water supplied to theaforesaid tank around the inner receptacle, a liquid-supply pipearranged to discharge into the inner receptacle, an oil-outlet formed atthe upper end of the inner receptacle, a valved air-cond noting pipe orpassage-way arranged to discharge into the chamber of the innerreceptacle, and means for supplying air under pressure to the saidpassage-way, substantially as and for the purpose set forth.

. l0. Apparatus of the character indicated, comprising a chamber forreceiving the material to be treated and the liquid employed in treatingthe material, which receptacle has an oil-outlet at its upper extremity,a hollow core arranged centrally of the material-re -ceiving chamber ofthe receptacle and extend- IOO IIO

core arranged centrally of the material-receiving chamber of thereceptacle,and extending from the chambers upper end into the lowerportion of the chamber and closed at its lower end; a pipe extendingfrom outside ofthe receptacle downwardly through the said core andarranged to discharge in the lower portion of the aforesaid chamber; a

-tank or reservoir in open relation with the said pipe, a valve in theline of the said pipe between the tank or reservoir and the pipesdischarging end, and an air-pump connected with the said tank orreservoir, substantially as and for the purpose set forth.

12. Apparatus of the character indicated, comprising a receptacle forreceiving the material to be treated and the liquid employed in treatingthe material, which receptacle has an oil-outlet at its upper end, andis provided with a valved residue-outlet at its lower end; means forheating the material introduced into the receptacle; means for drainingthe receptacle of solution that is formed therein and convertible intogelatin; a valved pipe extending downwardly into the lower portion ofthe material-receiving chamber of the receptacle, and having itsdischarging end provided with a plurality of laterally-projecting arms;the check-valves within the said arms, and means for supplying air underpressure to the said pipe, substantially as and for the purpose setforth.

13. In apparatusofthecharacterindicated, the combination, with areceptacle for receiv ing the material to be treated andthe liquidemployed in treating the material, which receptacle has an oil-outlet atits upper extremity to permitfthe oil extracted from the material Withinthe receptacle to overflow at the oil-outlet, of a water-receivingchamber arranged to receive the oil overflowing from the saidoil-outlet, and means for boiling the Water within the said chamber,substantially as and for the purpose set forth.

14. In apparatus of the character-indicated, the combination with areceptacle for receiving the material to be treated and theliqnidemployed in treating the material, which receptacle has an oil-outlet atits upper end to permit the' oil extracted from the material within thereceptacle to overflow at the oiloutlet: of a water-receiving chamber;means for boiling the water within the said cham-V ber; means forconducting oil from the aforesaid oil-outlet into the said chamber, anda trough or receptacle connected with and arranged to receive the oilfrom the upper and Oil-discharging end of the water-receiving chamber,su bstantially as and for the purpose set forth.

15. In apparatus of the character indicated,

outlet: of a water-receiving chamber; means for boiling the Water withinthe said chamber; means for conducting oil from the aforesaid oil-outletto the said chamber; a trough or receptacle connected willi and arrangedto receive the oil from the upper and oil-discharging end of thewater-receiving chamber, and two valved drain-pipes connected with thelast-mentioned trough or receptacle, substantially as and for thepurpose set forth.

16. In apparatus of the character indicated, the combination with areceptacle for receiving the material to be treated and the liquidemployed in treating the material, which receptacle is provided with anoil-overflow at its upper end: of a water-receiving chamber surroundingand exposed to the said receptacle;`means for boiling the waterintroduced intothe said chamber and thereby generating the steamrequired to purify the oil received upon the water within the saidchamber for an overfiow of oil from the oil-outlet of the aforesaidreceptacle, substantially as and for the purpose set forth. v

17. In apparatus of the character indicated, the combination with areceptacle for receiving the material to be treated and the liquidemployed in treating the material, which receptacle has its upper endopen and adapted to discharge oil extracted and rising from the materialwithin the receptacle: of a water-receiving chamber surrounding andexposed to thesaid receptacle below the latter-s oil-discharging end;means for boiling the water Within the said chamber, and a trough orreceptacle formed at the upper end of the said chamber and arranged asrequired to receive oil overflowing from the top of the body of boilingwater within the chamber, substan tially as and for the purpose setforth,

18. In apparatus of the character indicated, the combination with areceptacle for receiving the material to be treated and the liquid tacleformed at the upper end of the saidchamber and arranged as required toreceive oil overflowing from the top of the body of water within thechamber, which ltrough has its bottom deeper at one side of thewater-receiving chamber, and two valved pipes connected with the deeperportion of the trough, substantially as and for the purpose set forth.

19. Apparatus of the character indicated, comprising a Water-receivingtank, a receptacle arranged within and centrally of the said tank andadapted to receive material to be treated and the liquid employed intreating the material, which receptacle has its upper end provided withan oil-overiiow arranged to discharge ,into the aforesaid tank,

IOO

IIO

a heating-coil within the loWer portion oi the.

water-receiving tank, a valVed-Water-supply pipe arranged to dischargeinto the inner receptacle, and a Valved Water-supply pipe arranged todischarge into the Water-receiving chamber of the aforesaid tank,substantially as and for the purpose set forth.

20. Apparatus of the character indicated, comprising an inner receptacled provided with an oil-overflow at its upper end, a Waterreceiving tanksurrounding the said receptacle and having a bottom declining toward thesaid receptacle, a heating-coil Within the

